This wikiHow walks you through the process of advertising a garage sale on Facebook. Since you only need a Facebook account, this will work on both PC and Mac computers. You can advertise a garage sale by creating an event, a status, or by using Facebook's marketplace.

1. Log in to Facebook and go to your newsfeed.
2. Click on Events and then Create Event.
3. Fill in details about your garage sale.
4. Click Create Event to save your event.
5. Click the Share button to advertise it locally.
6. Select Promote Event at the top to pay for more advertising time.